The Spider Farmer® SF4000 450W Full-Spectrum LED Grow Light in the updated 2026 version represents a highly efficient lighting solution for professional indoor horticulture. Equipped with first-class Premium Bridgelux High-Efficiency LEDs, the system delivers powerful, uniform light output with a real power consumption of 450 watts ($\pm5\%$).

Optimized PPFD light distribution for maximum yields

The technical design focuses on a perfectly balanced PPFD (Photosynthetic Photon Flux Density) light distribution across the entire core growing area. Thanks to the optimized layout and increased number of diodes, the photon flux density is distributed so that even plants in the peripheral areas of the growing zone receive a homogeneous amount of light. This even distribution prevents hot spots, ensures consistent canopy penetration, and enables stable, predictable harvest yields over a core area of 120 x 120 cm and a maximum area of up to 150 x 150 cm.

Thanks to the engineering upgrade, the highly developed Bridgelux diodes operate under a lower individual load. This reduces the internal stress on the components, ensures excellent thermal stability, and extends the system's lifespan to up to 55,000 operating hours. The Photon Efficacy (PPE) reaches a peak value of 2.7 µmol/J.

Flexible Full Spectrum for all Development Stages

The highly efficient full spectrum covers all phases of the plant cycle - from germination to harvest. It is composed of the following wavelengths and color temperatures:

• 2800-3000K (Warm White): Provides an increased red component to support the generative phase (flowering).

• 4800-5000K (Cool White): Provides bluish light for healthy, compact vegetative growth.

• 660-665nm (Deep Red) & 730-740nm (Infrared / IR): Accelerate flowering and maximize harvest weight in the demanding bloom phase.

Construction, Control, and Cooling

The SF4000 is equipped with a dimmer box and a stepless dimmer knob to flexibly adjust the light intensity to current needs. Via universal 0-10V control protocols, several lamps can also be daisy-chained and controlled centrally (Multi-Light Connection) - ideal for commercial applications and larger areas. The system operates completely silently without fan noise through passive cooling via a massive, thick aluminum heat sink and emits only a minimal amount of heat during operation. A reliable brand driver with high safety performance and high-quality impregnation guarantees optimal power supply, while protective covers for the cables increase operational safety.

Technical Specifications

Scope of Delivery

• 1 x Spider Farmer SF4000 450W LED Grow Light (with integrated dimmer box)

• 1 x Power Cord

• 2 x Stainless Steel Hanging Hooks (Silver Hooks)

• 4 x Adjustable Rope Ratchets (YOYO Hanger Hooks)

• 1 x User and Installation Manual (User Manual for Installation)